CN103869479A - Laser projecting device - Google Patents
Laser projecting device Download PDFInfo
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- CN103869479A CN103869479A CN201210541630.0A CN201210541630A CN103869479A CN 103869479 A CN103869479 A CN 103869479A CN 201210541630 A CN201210541630 A CN 201210541630A CN 103869479 A CN103869479 A CN 103869479A
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- crystal grain
- laser
- light collecting
- collecting part
- projection device
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Abstract
The invention relates to a laser projecting device, comprising at least one blue light laser crystal grain, at least one red light laser crystal grain, at least one green light laser crystal grain and a spectroscope disposed on a light exit path of the laser glowing crystal grains. The laser projecting device also comprises a substrate. The laser glowing crystal grains are disposed on the substrate; the laser beams emitted by the laser glowing crystal grains are incident to the spectroscope respectively and then radiated out after being uniformly mixed by the laser beams reflected by the spectroscope.
Description
Technical field
The present invention relates to a kind of projection arrangement, relate in particular to a kind of laser projection device.
Background technology
Laser-projector is a kind of novel projector equipment, and the image going out because of its projection has larger colour gamut, higher brightness, contrast and color saturation, gets more and more people's extensive concerning.
Traditional laser-projector is by direct the laser beam that utilizes the lasing fluorescence diode of three kinds of basic coloured light to send directive spectroscope, carry out again mixed light via spectroscopical light, then become picture signal to be presented on screen optical signal modulation by photoelectricity regulating device.
Because traditional laser-projector is to utilize three laser diodes to be used as LASER Light Source, thereby volume and the production cost of whole laser projection device are increased.
Summary of the invention
In view of this, be necessary to provide a kind of drop shadow effect good laser projection device.
A kind of laser projection device, comprise at least one blue laser crystal grain, at least one red laser crystal grain, at least one green laser crystal grain and be positioned at these lasing fluorescence crystal grain and go out the spectroscope on light path, described laser projection device also comprises a substrate, described lasing fluorescence crystal grain is arranged on substrate, the laser beam that described lasing fluorescence crystal grain sends is incident to respectively spectroscope, after evenly mixing, penetrates via the laser beam of described spectroscope reflection.。
Laser projection device of the present invention, described three lasing fluorescence crystal grain are all arranged on same substrate, and compared with the technology that realizes projection with traditional three trichromatic laser diodes of employing, the laser projection device volume in this case is less, and cost is lower.
Brief description of the drawings
Fig. 1 is the structural representation of the laser projection device of first embodiment of the invention.
Fig. 2 is the light path schematic diagram of the laser crystal grain in the laser projection device of first embodiment of the invention.
Fig. 3 is the light path schematic diagram of the laser crystal grain in the laser projection device of second embodiment of the invention.
Main element symbol description
| |
10 |
| |
20 |
| Blue |
21 |
| Red |
22 |
| Green |
23 |
| |
30 |
| Main part | 31 |
| The first light collecting part | 33 |
| The second light collecting part | 35 |
| Spectroscope | 40 |
| |
41、43、45 |
| Laser projection device | 100 |
Following embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Embodiment
Refer to Fig. 1 and Fig. 2, laser projection device 100 of the present invention comprises a substrate 10, be arranged at some luminescent grains 20 on substrate 10, be arranged at luminescent grain 20 1 sides and go out the spectroscope 40 on light path and be arranged at the lens arrangement 30 between these luminescent grains 20 and spectroscope 40 at luminescent grain 20.
Described substrate 10 is a smooth plate body, is provided with circuit structure (not shown) on one side surface.In the present embodiment, described substrate 10 can be made up of the insulating material such as silicones or epoxy resin.
Described luminescent grain 20 is lasing fluorescence crystal grain, and it is spaced a side surface that is provided with circuit structure in substrate 10 successively, and with substrate 10 on corresponding circuit be electrically connected.The electric current passing through by controlling corresponding circuit, the i.e. brightness of adjustable each luminescent grain.Described luminescent grain 20 is in order to produce the laser beam that shows required color.Described luminescent grain 20 comprises a blue laser crystal grain (B) 21, a red laser crystal grain (R) 22 and a green laser crystal grain (G) 23.Described blue light; Laser crystal grain (B) 21, red laser crystal grain (R) 22 and green laser crystal grain (G) 23 are located along the same line.In the present embodiment, described blue laser crystal grain (B) 21, red laser crystal grain (R) 22, green laser crystal grain (G) 23 are along an end surfaces that is laterally arranged at intervals at successively substrate 10 of substrate 10.Certainly, in other embodiments, order and direction that described blue laser crystal grain (B) 21, red laser crystal grain (R) 22 and green laser crystal grain (G) 23 arrange are unrestricted.
Described lens arrangement 30 arranges with described luminescent grain 20 intervals, and is positioned at the going out on light path of described luminescent grain 20.The consistent material of described lens arrangement 30 use refractive index is made, its laser beam refraction in order to described luminescent grain 20 is sent.
Described lens arrangement 30 comprises a main part 31 and some the first light collecting parts 33 and some the second light collecting parts 35 that are outwards convexly equipped with from the relative both side surface of this main part 31 respectively.In the present embodiment, described the first light collecting part 33, the equal one of the second light collecting part 35 extend to form on described main part 31.
Described main part 31 is rectangular-shaped, and its direction extending longitudinally is parallel with the direction that described blue laser crystal grain (B) 21, red laser crystal grain (R) 22 and green laser crystal grain (G) 23 are arranged in order.Described the first light collecting part 33 is hemispherical, and its interval evagination is the side surface towards described luminescent grain 20 in described main part 31.In the present embodiment, the quantity of described the first light collecting part 33 is 3.Described the first light collecting part 33 successively with blue laser crystal grain (B) 21, red laser crystal grain (R) 22 and green laser crystal grain (G) 23 one by one just to arrange.The outside surface of described the first light collecting part 33 arcuations reflects in order to the laser beam that corresponding with it crystal grain is sent, thereby change the direction of propagation of the laser beam that the crystal grain of correspondence sends with it, and then the light of avoiding different crystal grain to send produces chiasma interference in space.Preferably, after the outside surface refraction of the laser beam that described luminescent grain 20 sends via the arcuation of the first corresponding with it light collecting part 33, form parallel beam.Certainly, the outside surface of described the first light collecting part 33 can be also the uneven surface of other shapes, as long as it can, by after the laser beam refraction of sending from described luminescent grain 20, can spatially not produce intersection.
Described the second light collecting part 35 is all identical with shape, the size of the first light collecting part 33.Described the second light collecting part 35 compartment of terrain evaginations are in described main part 31 on the surface away from described luminescent grain 20 1 sides, and with described the first light collecting part 33 symmetries.In the present embodiment, the number of described the second light collecting part 35 is 3.The outside surface of described the second light collecting part 35 arcuations is in order to focus on the parallel beam of the formation after the first corresponding with it light collecting part 33 reflects on described spectroscope 40.In other embodiment, described the first light collecting part 33 and the second light collecting part 35 can be also Fresnel Lenses.
The light splitting piece 41,43,45 that described spectroscope 40 comprises interval and be arranged in parallel.The direction of described light splitting piece 41,43,45 certainly close described lens arrangements 30 is to setting gradually away from the direction of lens arrangement 30.Described light splitting piece 41,43,45 is obliquely installed on the surface of substrate 10, and angle between the direction that tilts of described light splitting piece 41,43,45 and described substrate 10 direction extending longitudinally is 45 degree.In the present embodiment, described light splitting piece 41,43,45 is obliquely installed to lower right corner direction from the upper left corner of substrate 10 directions extending longitudinally.Preferably, after second light collecting part 35 refractions of the light that described luminescent grain 20 sends via correspondence, focus on the light splitting piece 41,43,45 of described correspondence.
The green that described light splitting piece 41 can send green laser crystal grain (G) 23 and the reflection of the laser beam of periphery wavelength thereof, and the light beam of its all band is in addition seen through.The redness that described light splitting piece 43 can send red laser crystal grain (R) 22 and the laser beam of periphery wavelength thereof reflect, and make the light transmission of its all band in addition.The blueness that described light splitting piece 45 can send blue laser crystal grain (B) 21 and the laser beam of periphery wavelength thereof reflect, and make the light transmission of its all band in addition.
When described laser projection device 100 is worked, described blue laser crystal grain 21(B) blue laser beams sent forms parallel beam after the first corresponding with it light collecting part 33 refractions.This part parallel beam is incident to and the second light collecting part 35 of the first light collecting part 33 symmetries via main part 31.Described the second light collecting part 35 converges at the parallel blue laser beams being incident on it on described light splitting piece 45, and the light beam of convergence reflects to see through light splitting piece 43,41 next time via light splitting piece 45.
The red laser light beam that described red laser crystal grain (R) 22 sends forms parallel laser beam after the first corresponding with it light collecting part 33 refractions.This part parallel red laser light beam is incident to and the second light collecting part 35 of the first light collecting part 33 symmetries via main part 31.Described the second light collecting part 35 will be incident to convergence of rays on it on described light splitting piece 43, and sees through light splitting piece 41 downwards via described light splitting piece 43 reflections.
The green laser beam that described green laser crystal grain (G) 23 sends forms parallel laser beam after the first corresponding with it light collecting part 33 refractions.This part parallel beam is along the second light collecting part 35 of main part 31 directives and the first light collecting part 33 symmetries.Described the second light collecting part 35 will be incident to convergence of rays on it in described light splitting piece 41, and reflects downwards via described light splitting piece 41.And this part green laser beam after light splitting piece 41 reflection with see through vertically downward the blue laser light beam of light splitting piece 41,43 and mix through the red laser light beam of light splitting piece 41 vertically downward after outgoing.Described mixed light, through ovennodulation, can form required picture signal.
In a second embodiment, refer to Fig. 3, in described laser projection device 100, described lens arrangement 30 also can not arrange described the second light collecting part 35 away from a side surface of described laser crystal grain., described lens arrangement 30 is a vertical plane away from a side surface of described laser crystal grain.Therefore, in the present embodiment, the laser beam that described lasing fluorescence crystal grain 20 sends is via the corresponding with it parallel laser beam of the first light collecting part rear formation of 33 refraction, directly autonomous body 31 outgoing.Described parallel laser beam is mixed into parallel laser beam and penetrates after launching via corresponding with it light splitting piece 41,43,45.The parallel beam penetrating can be again assemble via outside collector lens (not shown) after with easy to use.The light that described lasing fluorescence crystal grain 20 in the present embodiment sends is owing to being subject to forming parallel rays after the refraction of the first light collecting part 33, thereby reduce the intersection between different laser beams, and then reduced the interference between different laser beams, thereby promote the projection quality of laser projection device 100.
Laser projection device 100 of the present invention, on the one hand, due to the described laser crystal grain that can send three kinds of Essential colour is incorporated on substrate 10, and not adopt three traditional laser diodes to be used as LASER Light Source, thereby reduce the volume of whole laser projection device 100, and reduced cost; On the other hand, because going out of described blue laser crystal grain (B) 21, red laser crystal grain (R) 22 and green laser crystal grain (G) 23 is provided with lens arrangement 30 on light path, the refraction of the first light collecting part 33 by this lens arrangement 30, reduce the interference between each different laser beam, again via the focussing force of the second light collecting part 35, make to be incident to laser facula brightness on spectroscope 40 higher, and then make the noise of mixed light less, thereby promote the projection quality of laser projection device 100; Moreover, in laser projection device 100 of the present invention, because described blue laser crystal grain (B) 21, red laser crystal grain (R) 22 and green laser crystal grain (G) 23 are incorporated into the surface of described substrate 10 jointly, therefore only need a lens arrangement 30, can realize the laser beam that each crystal grain is sent and reflect processing, thereby further reduce the volume of laser projection device 100, also reduced manufacturing cost simultaneously.
Claims (10)
1. a laser projection device, comprise at least one blue laser crystal grain, at least one red laser crystal grain, at least one green laser crystal grain and be positioned at these lasing fluorescence crystal grain and go out the spectroscope on light path, it is characterized in that: described laser projection device also comprises a substrate, described lasing fluorescence crystal grain is arranged on substrate, the laser beam that described lasing fluorescence crystal grain sends is incident to respectively spectroscope, after evenly mixing, penetrates via the laser beam of described spectroscope reflection.
2. laser projection device as claimed in claim 1, it is characterized in that: also comprise that being positioned at described lasing fluorescence crystal grain goes out the lens arrangement on light path, the laser beam that described lasing fluorescence crystal grain sends is first via being incident to respectively spectroscope after lens arrangement refraction again, on described lens arrangement, be provided with some the first light collecting parts, laser beam refraction rear the form parallel beam of described the first light collecting part in order to described lasing fluorescence crystal grain is sent, to avoid forming interference of light.
3. laser projection device as claimed in claim 2, is characterized in that: described the first light collecting part is arranged at intervals at the side surface of described lens arrangement towards described lasing fluorescence crystal grain, and with described lasing fluorescence crystal grain one by one just to arrange.
4. laser projection device as claimed in claim 3, is characterized in that: described the first light collecting part is convexly equipped with formation from described lens arrangement towards described lasing fluorescence crystal grain.
5. laser projection device as claimed in claim 4, is characterized in that: described the first light collecting part is hemispherical.
6. the laser projection device as described in any one in claim 2 to 5, it is characterized in that: on the side of described lens arrangement away from described lasing fluorescence crystal grain, be provided with some the second light collecting parts, described the second light collecting part is in order to by the laser beam focusing being incident on it.
7. laser projection device as claimed in claim 6, it is characterized in that: described spectroscope comprises the light splitting piece of the corresponding setting of some and described lasing fluorescence crystal grain, the laser beam that described the second light collecting part sends described lasing fluorescence crystal grain focuses on respectively on the light splitting piece corresponding with lasing fluorescence crystal grain.
8. laser projection device as claimed in claim 6, is characterized in that: described the second light collecting part is arranged at intervals on described lens arrangement, and is symmetrical arranged with described the first light collecting part.
9. laser projection device as claimed in claim 6, is characterized in that: described the first light collecting part and the second light collecting part are Fresnel Lenses.
10. laser projection device as claimed in claim 1, is characterized in that: described spectroscope is obliquely installed on described substrate, and angle between described spectroscopical vergence direction and described substrate direction extending longitudinally is 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210541630.0A CN103869479A (en) | 2012-12-14 | 2012-12-14 | Laser projecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210541630.0A CN103869479A (en) | 2012-12-14 | 2012-12-14 | Laser projecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103869479A true CN103869479A (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210541630.0A Pending CN103869479A (en) | 2012-12-14 | 2012-12-14 | Laser projecting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597616A (en) * | 2017-02-23 | 2017-04-26 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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| US6094294A (en) * | 1996-02-26 | 2000-07-25 | Seiko Epson Corporation | Optical modulator device, display and electronic apparatus |
| CN2665732Y (en) * | 2003-11-22 | 2004-12-22 | 鸿富锦精密工业（深圳）有限公司 | Digital cameras module |
| US20090185157A1 (en) * | 2006-05-30 | 2009-07-23 | Panasonic Corporation | Pattern projection light source and compound-eye distance measurement apparatus |
| US20090323027A1 (en) * | 2008-06-26 | 2009-12-31 | Seiko Epson Corporation | Light source device and image display apparatus |
| CN101750861A (en) * | 2008-12-05 | 2010-06-23 | 红蝶科技(深圳)有限公司 | Micro-projection optical engine |
| WO2011034810A3 (en) * | 2009-09-15 | 2011-05-19 | 3M Innovative Properties Company | Led projector and method |
| WO2012014798A1 (en) * | 2010-07-30 | 2012-02-02 | ソニー株式会社 | Light source unit, illumination device, and display device |
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2012
- 2012-12-14 CN CN201210541630.0A patent/CN103869479A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6094294A (en) * | 1996-02-26 | 2000-07-25 | Seiko Epson Corporation | Optical modulator device, display and electronic apparatus |
| CN2665732Y (en) * | 2003-11-22 | 2004-12-22 | 鸿富锦精密工业（深圳）有限公司 | Digital cameras module |
| US20090185157A1 (en) * | 2006-05-30 | 2009-07-23 | Panasonic Corporation | Pattern projection light source and compound-eye distance measurement apparatus |
| US20090323027A1 (en) * | 2008-06-26 | 2009-12-31 | Seiko Epson Corporation | Light source device and image display apparatus |
| CN101750861A (en) * | 2008-12-05 | 2010-06-23 | 红蝶科技(深圳)有限公司 | Micro-projection optical engine |
| WO2011034810A3 (en) * | 2009-09-15 | 2011-05-19 | 3M Innovative Properties Company | Led projector and method |
| WO2012014798A1 (en) * | 2010-07-30 | 2012-02-02 | ソニー株式会社 | Light source unit, illumination device, and display device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106597616A (en) * | 2017-02-23 | 2017-04-26 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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Application publication date: 20140618 |